OAR 734-078-0015: Types of Vehicle Combinations Authorized

(1) Permits may be issued only for the following types of vehicle combinations: (a) Log truck and pole trailer coupled together by stinger and reach. The stinger is to be at least five feet in length; (b) Log truck or motor truck or truck-tractor and independently operated manually or mechanically steered trailer; (c) Truck tractor semitrailer and trailer combination. The trailers shall be coupled together by stinger and reach and the distance from the front of the first trailer to the rear of the second trailer shall not exceed 68 feet; (d) Truck and trailer coupled together by means of a stinger and the trailer tongue. The stinger is to be at least five feet in length; (e) Truck transporting a pole by means of a pole dolly and pole drawbar device that is attached to the leading end of the pole and attached to the towing vehicle by means of a pintle hook; (f) An auxiliary axle may be authorized for the purpose of distributing the weight of the load; and (g) The Chief Engineer may designate other types of vehicle combinations, which in the Chief Engineer's determination fit the scope and purpose of these rules. (2) A stinger is measured longitudinally from a point located opposite the back of the tread of the tires of the last axle on the truck to the point of coupling.